I have a pound of beef kebab meat (cut in relatively large chunks--about 1 1/2 inches). I don't have a grill and don't trust our broiler. I'd like to cook it on the stove (or oven) and then slice the meat for tacos or fajitas. Should I cook the pieces whole and then slice or cut into smaller pieces before cooking? Slice with the grain or against? Cook on the stove or in the oven (or a combination)? For how long? Any other suggestions? Thank you!